thnx for the link it helped .. but i still dunno wat i i need a ball head or not .. i have the panasonic fz8 .. and this is my first time to buy atripod and dunno wat the best for me .. and the ball head can be attached to anytripod ?

Yep Graham's right - a ball head will allow you to set up quickly however, you may find that the 3 way gives you more stability, which you'll need if you're doing a lot of macro/night shots. You'll need to make fine adjustments to make it accurate but the 3 way head should allow for greater stability. And you'll still be able to pan effectively (although this is often easier hand-held anyway).